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1. The weights of all candy bars of this type are certainly not constant because of slight variations in the factory production process. Assume these weights vary according to a normal distribution with mean \mu=2.2 and population standard deviation \sigma=0.04oz . The quality control department checks weights of all candy bars before shipment to stores. It has been company policy to not ship any bars that would be in the lowest 7% of weights. Below what weight would identify, or cutoff, the lowest 7%?
2. If you roll a sum of 7 or 9 on one toss of a pair of dice you win $25. The cost to play the game is $3.00. Theoretically, how much would you expect to win (or lose) if you played the game 1000 times?
(Identify whether your answer is a gain or loss.)
the go transportation system of buses and commuter trains operates on the honor system. train travelers are expected to
You are given following information on residents' responses, broken down by sex. Determine the probability that resident is a man and opposes the bridge?
The standard deviation of the population is 1 at a-0.05, is the number of sticks of gum a person chews per day actually greater that 8?
the daily milk production of cows is normally distributed with a mean of about 35 kgday and a standard deviation of 7
Tthe United States during 1993 was $40,500. Assume the standard deviation was $8,500. Should a mobile home selling for $75,000 be considered an outlier? Explain why or why not.
Research the topic of Job Satisfaction and provide a 1 page write-up of the research highlighting where statistical analysis is being used and why it's used.
by means of a scatter diagram determine if there is a relationship between hours of machine use and millimeters of the
a six-sigma black belt quality engineer found that in a random sampl of 140 printed circuit boards 18 are defective due
The director of admissions at Kinzua University in Nova Scotia estimated the distribution of student admissions for the fall semester on the basis of past experience.
In part b, sample have greater variability than part a, but sample sizes are unchanged. How does larger variability influence size of standard error for sample mean?
When the non-parametric statistics utilized? Write down an example.
Election-day polls are taken from voting precincts selected because they are believed to be representative of all voters.
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